如何使用tkinter销毁每个按钮？

Question

我的目标是创建一个游戏，该游戏显示一副纸牌，并在每轮纸牌游戏中为每张纸牌创建一个按钮。问题是程序创建了按钮，但从不删除它们，因此它们在各回合之间堆叠。我尝试使用winfo_children在框架和每个单独的按钮上使用destroy函数。每轮结束后，如何最终清除按钮的主框架？我在下面复制了代码的相关部分。预先谢谢你。

class CardsFrame(Frame):
    def __init__(self, parent, hand):
        Frame.__init__(self,parent, width = 14)
        self.parent = root
        for card in hand:
            self.button = Button(self, text = card, width = 14)
            self.button.pack(side=BOTTOM)
    def killCards(self,parent):
        for widget in CardsFrame.winfo_children():
            widget.destroy()

def game():
    for widget in CardsFrame.winfo_children():
            widget.destroy()
    numCards = userInput.get()
    cardButtons = Frame(root)
    CardsFrame.killCards()
    if numCards.isdigit():
        if 0 <= int(numCards) <= 52:
            hand = deal(numCards)
            result1 = str(evaluate(hand))
            cardButtons = CardsFrame(root, hand)
            cardButtons.pack()
            for cards in hand:
                print('{0:5s}{1:18s}\n'.format(' ',cards), end='')
            print('{0:5s}{1:10s}{2:5s}{3:7s}\n'.format(' ', '---------> ', 'Score: ',result1, end=''))
        result = '{0:6s}{1:3s}'.format('Score: ', result1)
        result = Label(text = 'Score: ' + result1)
        score['text'] = 'Score: ' + result1